Rip Curl Men's 'Lincoln SSS Midnight' Quartz Stainless-Steel-Plated Sport Watch, Color:Black (Model: A2430-MID) 316L marine grade stainless steel case and strap Unidirectional bezel for countdown timing at a glance Military inspired numbered hour markers Case diameter: 45 mm Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving